The B&W TS10047BB 3" Drop Tow & Stow Tri-Ball Mount has three ball sizes, which eliminates the need for multiple ball mounts. It can be stowed underneath the vehicle when it is not being used and the height is adjustable. The Tow & Stow Tri-Ball mount will improve the appearance of the vehicle by keeping the hitch out of the way, and prevent it from obstructing the surrounding area. Easy to use, just rotate the ball to the size needed for towing, then adjust the height in one-inch increments.